As of today, , there are 218 properties listed for sale in ZIP code 62002 and 218 properties listed for sale in the city of Alton. Of those 218 properties, there are 216 single family houses and 2 condos. The last known list price for 810 Union St was $100,000, which is 25% above the current median price of $79,900 for Alton and 25% above the median of $79,900 for 62002. 810 Union St is a single family residential home that is approximately — Sqft, which is 100% below the median size in Alton of 1,322 Sqft and 100% below the median size in 62002 of 1,322 square feet. This property's price per Sqft was —, which is 100% below the current median in 62002 of $66 and 100% below the Alton median of $66.